For your companion pets, ThorneVet Longevity Complex for dogs and cats is a chewable health supplement with multiple ingredients. The compounds like curcumin, quercetin, green tea phytosome, trans-resveratrol, and astaxanthin are combined in this formulation. Nicotinamide Riboside (NR) is studied as a NAD+ precursor.
Reality Check by Nutriessential
People with older dogs see changes in mobility, muscle mass, and cognitive function in their dogs. They aren’t sure whether their favorite animal is less active because of natural aging or some health changes. They want to be proactive about pet care.
Many pet owners say they notice changes in the way their cat or dog eats as it ages. They want more healthy years with their pets, but they don’t want their pets’ quality of life to go down. For them, longevity supplements for dogs and cats are considered an approach to meet the nutritional needs of aging pets, instead of a lifespan focus.
Among the supplements for senior dogs, the form matters. Pet owners are looking for products that they can easily mix in with their pet food so that the older animals don’t reject it outright.
Evidence Check by Nutriessential
In a 2025 Nutrition and Aging in dogs and cats study, the authors discuss the specific needs of senior pets. They point out 54.2% of dogs and 51.7% of cats are over 7 years old in 2022. The needs of aging animals and those with illnesses also vary. In older dogs and cats, maintenance energy requirements (MER) goes down by 20% to 30% because they become less active. So, dietary adjustments are needed. Proteins and amino acids are needed to preserve the lean body mass. The authors suggest customized nutrition.
Amidst the growing popularity of NAD supplements for dogs, we look at what the evidence says. A 2024 study evaluated 70 senior dogs (10+ or older) with mild-to-moderate signs of cognitive impairment. A group was given low dose of a supplement containing NAD+ precursor and senolytic. Another group got a high dose, while a placebo group was given sugar pills. The owners gave NAD+ precursor capsules and a two-day burst of senolytic supplement once every month. The pet owners filled a questionnaire and mentioned positive changes in their dog’s brain functions over 3 months with the low dose and high-dose supplements. But the differences in cognitive tests weren’t statistically significant. Only owner-reported scores were tracked and no actual markers were evaluated.
Another 2026 study explores dietary supplementation with taurine in dogs. The authors discuss the conditionally essential amino acid taurine and its role in the physiological functions of dogs. They say, dogs have varied abilities to naturally synthesize taurine. Offering dietary supplements with taurine may support healthy levels depending on existing diet, dog breed, size, and life stages.
